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94 civic underdash wiring help!

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Old 05-15-2014, 04:16 PM
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Default 94 civic underdash wiring help!

hey everyone i need help with identifying where these plugs go. Long story short bought a shell with no harnesses at all. I ordered all the harnesses got everything figured out, except for these plugs circled in red. I do not have a power anything btw.
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Old 05-15-2014, 05:07 PM
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Default Re: 94 civic underdash wiring help!

get a service manual and look up diagram.
Old 05-15-2014, 05:23 PM
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Default Re: 94 civic underdash wiring help!

Service manual doesn't show plug color so is less help, you need an Electrical Troubleshooting Manual coupled with the factory service manual (FSM).

The upper green and yellow plug I believe is the cluster plugs (C509 5 pin Green and C508 5 pin Yellow) . Blue I think is to a box under the dash the Interlock Control Unit box.

The other three plugs are a but harder, the one with the thick red and yellow wires might be a harness to harness connector. Need to know the pin counts to those plugs.

Pin count to all the plugs would actually be helpful along with wire colors.
Old 05-15-2014, 05:37 PM
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Default Re: 94 civic underdash wiring help!

ok they 3 clear plugs i figured out go to the turn signals, wipers, etc. (lower 3 in pic)
still cant figure out what the blue, green and yellow plug is for, nothing matches up to them
Old 05-15-2014, 05:58 PM
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Default Re: 94 civic underdash wiring help!

ok heres what i got figured out so far


both of these fit into the black relay on the side of the fuse panel. does anyone know what one belongs there and where the other one goes?

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Old 05-15-2014, 07:10 PM
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Default Re: 94 civic underdash wiring help!

ok so this is where im at now


only pic i can find of that plug does anyone know where it goes?
Old 05-15-2014, 08:25 PM
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Default Re: 94 civic underdash wiring help!

The left of the fuse box in your pic is right where the Starter Cut Relay is which has a 4 pin green connector.
Old 05-15-2014, 09:25 PM
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Default Re: 94 civic underdash wiring help!

i think i maybe missing that then, cause there is no where to plug that green plug into at all
Old 05-15-2014, 09:49 PM
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Default Re: 94 civic underdash wiring help!

Is you vehicle automatic or manual transmission? The relay is on manual, automatic has a different setup from what I could tell in the ETM.

The harness appears to be a manual.

If manual, then you just need to get the relay. C433 has both sides of the relay connection to it so terminates the plug.
Old 05-15-2014, 09:50 PM
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Default Re: 94 civic underdash wiring help!

the car is manual, but when i purchased the car it was completely stripped
Old 05-15-2014, 09:56 PM
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Default Re: 94 civic underdash wiring help!

Originally Posted by TomCat39
Is you vehicle automatic or manual transmission? The relay is on manual, automatic has a different setup from what I could tell in the ETM.

The harness appears to be a manual.

If manual, then you just need to get the relay. C433 has both sides of the relay connection to it so terminates the plug.
ok cool thank you, you wouldnt happen to know the part number to the relay would you?
Old 05-15-2014, 10:09 PM
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Default Re: 94 civic underdash wiring help!

nvm i found it, they tucked it in a random spot. Thanks for the help!
Old 09-08-2022, 08:39 AM
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Default Re: 94 civic underdash wiring help!

Originally Posted by bay.kid
nvm i found it, they tucked it in a random spot. Thanks for the help!
did you figure out where that blue clip next to the green and clear goes? Also, green clip goes to a relay?
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